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Coolmath Algebra
Solving Equations Lesson 4 - What to Do - Putting Parts 1 & 2 Together   (page 2 of 3)
---- This algebra lesson explains how to solve an equation when you need to add or subtract something from both sides AND multiply and/or divide by something.

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Check it!

2x - 7 = 3 ... 2(5) - 7 = 3 ... 3 = 3

 Yep!

YOUR TURN:

Solve          3x + 8 = -7          *And check it!

Here's one with a bit of a twist:

Solve    6 - x - 6 = 7 - 6 which gives -x = 1

 

Ditch the 6:

x isn't quite alone yet!
Multiply both sides by -1:

 (-1)(-x) = (1)(-1) which gives x = -1
 

OK, so what if there are x's on both sides?

9 - 3x = 5x + 6

Here's the game:

Get all x guys on one side and all number guys on the other.

*Ditch the smallest x guy first!  (Trust me.)

Continued on the next page

 The printing and distribution and/or downloading of these lessons is strictly prohibited.
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